Pressure gauge



Oct. 13, 1925.

J. R. PADESKY PRESSURE GAUGE Filed April 28. 1,924

awbent oz Patented Oct. 13, 1925.

- UNITED STATES,

, 1,556,877 PAT NT orr cs.

JOHN R. 1"ADESKY,OF LA enossn, WISCONSIN, ASSIGNOR TO THE NATIONAL GAUGE & EQUIPMENT COMPANY, 015'. LA cnossn, wI-scoNsIN, A CORPORATION or WIS- CONSIN.

PRESSURE GAUGE.

Application filed April 28, 1924. Serial No. 709,403.

automobiles, although the. improvements are not necessarily limited to this particular type of gauge.

The ob ect of my invention 1s to provide improved connections between the pressure responsive element and the indicating hand of the device of a simple character which comprises means whereby the parts may be readily calibrated.

Referring to the drawings:

Fig. 1 is a side elevation of so much of a gauge as is necessary to illustrate the improvements.

Fig. 2 is a front elevation of the same.

Fig. 3 isan enlarged section on the line 33 of Fig. 1.

Fig. 4.- is a side elevation of those parts shown in Fig. 3. Fig. is a section on the line 55 of Fig. 1. I

Referring to the drawings, 1 represents a chamber provided with a threaded ni ple 2 and having one side closed by a diaphragm 3 which forms the pressure responsive element. The chamber-1 carries a pair of oppositely-arranged brackets 4conneeted by a bridge piece 5 of bendable metal and from the lower end of the bridge projects the horizontal portion (3 of a forwardly-extending bracket which has an upturned portion 7 at its forward end to which is connected a dial plate 8'. The bracket portion 7'carries a horizontal pin 9 upon which is pivoted the yoke-shaped portion 10 of a pointer 11, the pointer being provided with a pair of rightangled bends to enable it to project through a slotted opening'12 in the dial plate in the usual way. The yoke-shaped portion of the pointer is provided with a projecting arm 18, the under edge of which, when the pointer is in zero position, extends in a straight horizontal line as shown in Fig. 5. Cooperating with this arm 13 is the'free end of claim a finger 1 1 formed of comparatively thin flat sheet metal which is twisted atone point of its length indicated at 15 so that an edge ot the free end of the arm will cooperate with the under horizontal edge of the arm 13. The finger is formed with three right-angled bends 16, 17 and 18 and the rear end of the linger is projected through a slot 5 in. the bridge and is connected with a pin 19 which is journaled in ears [20 on the rear side of the bridge 5. Projecting from the pin is a short crank arm 21 the free end-of which lies in close proximity toa button 22 tered on the diaphragm 3.

As a result of this construction when the diaphragm vibrates forwardly the finger 14 is rocked so as to raise the arm 13 and move the pointer about the dial. As before stated, the finger 14 is made of comparatively thin sheet metal and isformed with a quartert-urn twist 15. This enables the free outer cenend of the finger to be readily bent sidewise relatively to the arm '13 so as to properly calibrate the throw of the pointer and at the same time lends sufiicient rigidity to the free end of the arm to maintain it in adjusted position. I

Having thus described my invention, I

1. In a gauge, a'pressure responsive element, a pivoted pointer, a crank arm connected'with said pointer having an edge which lies in'a horizontal plane when said pointer is in zero position, a pivoted finger operated by said pressure responsive element and having its free end cooperating with the horizontal edge of said crank arm, said finger being of a readily bendable metal to .ermit-the same to be properly positioned wit r respectto said'crank arm.

2. In a gauge, a pressure responsive element including a diaphragm, a pivoted finger, a crank arm connected with said finger and cooperating with said diaphragm to move said finger, a plvoted pointer, .a crank arm connected with sald pointer and cooperating with the free' end of said finger to move said pointer, the free end of said finger being of readily bendable material to permit the same to be positioned properly relatively tovsaid pointer crank arm.

In testimony whereof, I have hereunto 'set my hand this 7th day of April, 1924:.

' JOHN R. PADEISKY. 

